Ventilator.



No. 838,382. 1 PATENTED DEC. 11, 1906: E. H. GASWELL.

VENTILATO R. APPLICATION FILED m. 1a. 1906.

ms NORRIS PETERS co., WASHINOION. n, c

EDWIN H. OAS'WELL, OF NORRIDGEWOCK, MAINE.

VENTILATOR.

Specification of Letters Patent.

Patented Dec. 11, 1906.

Application filed January 16,1906- Serial No. 296,335.

To all whom it may concern.-

Be it known that I, EDWIN I'I. CAswELL, a citizen of the United States, residing at Nor ridgewock, in the county of Somerset and State of Maine, have invented new and useful Improvements in Ventilators, of which the following is a specification.

This invention relates to ventilators designed especially for application to windows, and has for its objects to produce a comparatively simple inexpensive device of this char acter embodying a frame and a covering in which the frame may be folded into neat compact form for shipment or storage, one wherein the frame will be held rigidly in open condition for use, and one whereby a room may be thoroughly ventilated and the entrance of rain or snow be at the same time prevented.

With these and other objects in view the invention comprises the novel features of construction and combination of parts more fully hereinafter described.

In the accompanying drawings, Figure 1 is a sectional elevation of a ventilator embodying the invention and showing the same applied for use. Fig. 2 is a perspective view of the frame in open condition. Fig. 3 is a similar view showing the frame collapsed or folded.

Referring to the drawings, it will be seen that the ventilator-frame, which is preferably composed of wire, comprises a normally vertical U-shaped portion or section 1 and a horizontal substantially U-shaped portion or sec tion 2, the end portions or arms 3 of which are pivoted at their inner terminals, as at 4, to the lower ends of the end portions or arms 5 of section 1, the arms 5 of which are provided near their normally upper ends with integral loops or eyes 6, formed by suitably bending or coiling the wire during the operation of forming the frame. Formed at the normally outer ends of the arms 3 are eyes or coils 8, in which are terminally pivoted diagonal bracing members or rods 9, having at their outer free ends engaging portions or hooks 10, adapted for engagement with the loops 6 to brace the frame in open condition, as illustrated in Fig. 2.

Applied to the frame is a covering, 11, of canvas or other suitable pliable material, said covering being marginally attached to the foldable portions or sections 1 and 2 and adapted when the frame is opened to be maintained in distended condition.

In practice when the ventilator is to be used the frame is held in open position by me ans of the braces 9, as heretofore explained, and the section 1 is positioned vertically beneath a window-sash 12 to rest upon the sill 13 with the frame 2 projecting horizontally beyond the sill, as seen in Fig. 1, thus to permit a free circulation of air upward beneath the ventilator and into the compartment. It may be mentioned in this connection that the frame is composed of spring-Wire, whereby in positioning the same in the window the end pieces 3 and 5 may be swung into place within the sash-guides and, owing to expansive pressure within the latter, hold the ventilator securely in place, and, furthermore, that when the device is not in use it may be collapsed or folded into compact form for storage by disengaging the braces 9 and folding the framesections 1 and 2, as seen in Fig. 3.

From the foregoing it is apparent that I produce a simple device admirably adapted for the attainment of the ends in view, it being understood that in attaining these ends minor changes in the details herein set forth may be resorted to without departing from the spirit of the invention.

Having thus described my invention, what I claim is 1. A ventilator comprising a frame consisting of a pair of substantially U-sha ed sections each formed from a single lengt of material and having their end portions or arms pivotally connected at their terminals, brace members connected with one of-the sections and adapted for engagement with the other to hold the frame in open position, and a covering applied to the frame.

2. A ventilator comprisin a frame consisting of a pair of substantially U-shaped sections each formed from a single length of material and having their end portions or arms pivotally connected at their terminals, the arms of one of the sections being provided with eyes,'brace members pivoted to the other section and having engaging portions to engage said eyes for holding the frame in open position, and a covering applied to the frame.

3. A ventilator comprisinga frame consisting of a pair of substantially U-shaped sections each formed from a single length of mathe frame in open position, and av covering l terlal and hav ng end portions or arms, the i applled to the frame. 10 arms of one section being pivotally connected In testimony whereof I afiix my signature at their terminals with the terminals of the I in presence of two Witnesses.

arms on the other and provided with eyes, di- ED WIN H. CASWELL. agonal members pivotally engaged with one Witnesses: 01 the sections and having terminal hooks for TI-I0s. F. TAYLOR, j 1 detachable engagement With the eyes to hold W. F. BROWN. 7 

